Why does the BMW X2 struggle to accelerate at high altitudes?

I recently took my BMW X2 on a trip to the mountains and noticed that it had trouble accelerating on steep inclines. I've never experienced this issue before. Can someone explain why this might be happening?

First of all, congratulations on owning a BMW X2. It's a fantastic vehicle with impressive performance capabilities. As for your question, the issue you experienced is most likely due to the high altitude affecting the engine's performance. The thinner air at higher altitudes makes it harder for the engine to draw in the necessary amount of air for combustion, resulting in reduced power. My advice would be to avoid driving at high altitudes and, if possible, use a lower gear to help with acceleration.